Packer-IO and UnwrellaConnect: Efficient and Free UVs
3d-io releases Packer-IO 1.3, the new version of its powerful free UV packing tool, now with support for real-world scale units and texel density. Additionally, UnwrellaConnect arrives, a free plugin that allows using Packer-IO directly within Blender.
Fast, precise, and scalable UV packing
Packer-IO is ideal for 3D artists in video games, VFX, and motion graphics. It doesn't unwrap UVs, but it packs them efficiently, optimizing space and maintaining constant times regardless of resolution. It works equally well with organic models as with hard surfaces.
Now with texel density and real-world units
With version 1.3, you can specify texel density (pixels per cm) to ensure uniform resolution across all your assets. Additionally, metric and imperial units are added, ideal for scenes that require physical precision in texturing.
Direct integration with Blender via UnwrellaConnect
No need to export anything anymore: with the new UnwrellaConnect plugin, you can do UV packing directly in Blender. It replaces the old UV-Packer and also connects with Unwrella-IO, 3d-io's commercial UV unwrapping tool.
A free, fast, and professional plugin? Yes, in 2025 it still happens. That said, don't let its simplicity fool you. More than one is already thinking of using it to pack UVs... and their lunch. 🍱